Andrea

- Voluntarily I only installed libvdpau. The others are probably
dependencies of VLC. I don't think it is needed.

Thanks for corroborating this as we were unsure.

- The performance problems are perhaps due to the change of sources.
This has many heavy plugins. However, I do not understand how to have
more than 100% load on the CPU.

With "top" and a multi-core system it displays all of the CPUs added together as it uses multi-threads. So as you see below, on my laptop that has 16 CPU's when I do a higher quality render CinGG will use more than 14 of the CPUs so that I end up with 1,408 % CPU usage as it adds up the usage on all of the CPUs together.

PID USER      PR NI    VIRT    RES    SHR S %CPU %MEM     TIME+ COMMAND
22873 root      20   0 8731032   1.9g 148520 S 1408   6.1   5:19.18 ci
1603 root      20   0 4893392 280296 104188 S 10.6   0.9 30:37.80 gnome-shell